Introduction - Asthma, condition affecting children and adults, is a clinical syndrome with lungs become narrow due to inflammation and tightening of muscles around the airways. Asthma is often under-diagnosed and under-treated, especially in low- and middle-income countries. Study estimate indicates the national burden of asthma at 17.23 million with an overall prevalence of 2.05% and accounts for 27.9% of disability-adjusted life years of Indian population. Drug utilization studies (DUS), important tool to describe the patterns of drug use in specific populations to support establishing decisions, problem solving and assessment of the right action to be taken during treatment regimen prescription.